A319 Captain reported encountering wake turbulence or jet blast on final approach to EWR from an aircraft that departed from an adjacent runway.

Narrative

As we were crossing the threshold of RWY 29 at EWR at around 30' the aircraft suddenly rolled to the right; approximately 15 degrees. The FO; who was the pilot flying gave a quick exclamation and immediately corrected the roll and landed flawlessly in the touchdown zone. Given the rapidity of events and the immediate and positive correction it didn't appear to me to be necessary or safer to call a go-around. As we were taxiing off the FO stated they felt we had hit some kind of wake turbulence and I called up the ground controller to ask if they had cleared a takeoff on RWY 22R just as we were landing. The response was 'yes; but it was legal to do so'. In my opinion; delaying the takeoff clearance by a few seconds as a plane is landing is far safer than setting up the kind of rapid response situation we faced very low to the ground. If we had been a bit lower; the chance of a wing strike or loss of control would have possibly been great enough to cause a very dangerous and unnecessary situation.